Mitsubishi Electronics MUZ-FDNA - U, MS-AWA, MUZ-ANA - U, MUY-ANA, MU-AWA, MSY-ANA Heat Operation MSZ

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2-2. DRY ( ) OPERATION

Set temperature is as shown on the right chart.

The system for dry operation uses the same refrigerant circuit as the cooling circuit.

The compressor and the indoor fan are controlled by the room tem- perature.

By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature decrease.

 

°F

Set temperature and

 

 

 

 

initial room temperature in dry mode

 

95

 

 

 

 

 

 

 

86

 

 

 

 

 

 

temperature

77

 

 

 

 

 

 

68

 

 

 

 

 

 

Set

 

 

 

 

 

 

 

 

59

 

 

 

 

 

 

 

5050

59

68

77

86

95 °F

 

 

 

Initial room temperature

 

1. Thermostat control

Thermostat is ON or OFF by difference between room temperature and set temperature.

 

Room temperature minus

Thermostat

set temperature (Initial)

ON

-1.8 °F or more

OFF

less than -1.8 °F

2.Indoor fan speed control

Indoor fan operates at the set speed by FAN SPEED CONTROL button. When thermostat OFF (compressor OFF), fan speed becomes Very Low. In AUTO the fan speed is as follows.

Room temperature minus

set temperature (During operation)

-1.8 °F

-1.3 °F

Fan speed

Room temperature minus

Room temperature minus

set temperature (Initial)

set temperature (During operation)

High

3.1 F or more

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Med.

between 1.8 and 3.1

F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

less than 1.8

F

 

 

 

 

4.5 F

 

 

 

 

 

 

 

 

 

 

 

1.8 F 3.1 F

3.Coil frost prevention

Coil frost prevention is as same as COOL mode. (2-1.3.)

The indoor fan maintains the actual speed of the moment. However ,when coil frost prevention works while the compressor is not operating, its speed becomes the set speed.

4.Low outside temperature operation

Low outside temperature operation is as same as COOL mode. (2-1.4.)

2-3. HEAT ( ) OPERATION (MSZ)

1. Thermostat control

Thermostat is ON or OFF by difference between room temperature and set temperature.

Thermostat

Room temperature minus

set temperature (Initial)

ON

less than 3.6 °F

OFF

3.6 °F or more

2.Indoor fan speed control

(1)Indoor fan operates at the set speed by FAN SPEED CONTROL button. In Auto the fan speed is as follows.

Fan speed

Room temperature minus

set temperature (Initial)

High

3.6 °F or more

Med.

between 0.4 and 3.6 °F

Low

less than 0.4 °F

Room temperature minus

set temperature (During operation)

3 °F

3.6 °F

Room temperature minus

set temperature (During operation)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.6 °F 7.2 °F

 

 

 

 

 

0.4 °F

3 °F

8

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Contents Contents Revised EDITION-BRevision a MS-A09WA MU-A09WA MS-A12WA MU-A12WA MXZ-2A20NA MXZ-3A30NA MXZ-4A36NAMS-AWA MU-AWA Cool OperationWhen the room temperature is under 73 F Operation time chart ExampleAuto Vane Operation Horizontal vaneLow outside temperature operation MSZ-ANA MSY-ANA MSZ-FDNA MSY-DNA MSZ-DNAMUZ-ANA MUY-ANA MUZ-FDNA MUY-DNA MUZ-DNA MSZ-A MSY-A MSZ-FD MSZ-D MSY-DHeat Operation MSZ MSZ-A24 Gradation of fan speed in initialOverload starting DefrostingAuto Change Over ··· Auto Mode Operation MSZ Mode selectionMUZ-FD MUZ-D MUY-D Outdoor FAN Motor ControlMUZ-A MUY-A Function of main parts Inverter System ControlMUZ-FD MUZ-A24 MUY-A24 MUZ-D MUY-D Outline of simple partial switching method At normal operationPurpose of PAM adoption Input current waveform without PAMCompressor Intelligent power moduleElimination of electrical noise Sine wave control Control Method of Rotation TimesMUZ-FD12 Operational Frequency Control of Outdoor UnitMUZ-FD09 Cool · DRY Mode Heat ModeExpansion Valve Control LEV Control Pulse MUZ-A09/12/15/17 MUY-A15/17MUZ-A09/12 MUZ-A15/17MUY-A15/17 MUZ-A24260 Inverter main power supply circuit MXZ-ANAProtects transistors from over current Opening before stop → 500 pulse in 15 minutes MXZ-2A20NA/3A30NA MXZ-2A20NACool Heat MXZ-3A30NAMXZ-2A20NA MXZ-3A30NAMXZ-2A20NA Exclusive LEV Receiver LEVMXZ-3A30NA Exclusive LEV MXZ-4A36NACool DRY Heat MXZ-2A20NA MXZ-3A30NAMXZ-2A MXZ-3A MXZ-4AOperational Frequency Range ∆RTDischarge Temperature Protection Control Heat Defrosting ControlOutdoor FAN Control MXZ-4APRE-HEAT Control MXZ-2A20NA- 1 MXZ-3A30NA MXZ-4A36NA DRY Operation Heat OperationHigh pressure protection Made in Japan
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MSZ-FDNA, MUZ-FDNA - U, MUZ-FDNA, MUZ-ANA - U, MUY-ANA specifications

Mitsubishi Electronics has long been a leader in the HVAC (heating, ventilation, and air conditioning) industry, consistently delivering cutting-edge technology and innovative solutions. The MUZ-ANA, MUZ-ANA - U, MU-AWA, MUZ-FDNA, and MS-AWA models exemplify the company's commitment to efficiency, comfort, and advanced engineering.

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